ISO 18639-3:2018 specifies test methods and minimum performance requirements for protective clothing for firefighters while engaged in rescue activities. Clothing related to specific rescue activities are documented in individual subclauses, see 6.2.1 or 6.2.2. NOTE For further guidance see ISO 18639‑1. Subclauses of this document cover general clothing design, the minimum performance level of the materials used and the methods of test for determining this performance level. ISO 18639-3:2018 does not cover special clothing for use in other high risk situations such as firefighting. ISO 18639-3:2018 does not cover protection for the head, hands and feet or protection against other hazards, e.g. chemical, biological, radiation and electrical hazards, except for limited, accidental exposure to some chemicals and contaminated blood or other body fluids.